Auvidea X221D, Справочное руководство

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X221D & X221D-AI TECHNICAL REFERENCE MANUAL
VERSION: 0.3 Page 10 of 40 AUG.2022
SECTION 4 Features
4.1 Crypto authentication chip
Pin Description
Model ATSHA204A-SSHDA-T
Datasheet https://ww1.microchip.com/downloads/en/DeviceDoc/ATSHA204A-Data-
Sheet-40002025A.pdf
The crypto chip can be used for authentication, software licensing and copy protection.
The crypto authentication chip is currently not supported. Support is planned for revision 3 of this
product.
4.2 Fan connection
4.2.1 Fan + Adapter specification
4.2.2 Set Fan speed
Set FAN speed to lowest value. Some FANs don't stop when speed is 0.
echo 0 > /sys/devices/pwm-fan/target_pwm
Set FAN speed to highest value possible
echo 255 > /sys/devices/pwm-fan/target_pwm
4.2.3 Read Fan speed
command to read FAN tachometer. Value displays in rounds per minute.
(Depending on the FAN this value may need to be scaled/converted)
Image Note
X221D +
Fan
On the left you see a standard
80x80x15mm fan connected with the
adapter cable to the J8 Fan connector.
Adapter
cable
On the left you see a drawing of the
adapter Kable and the pin description.